Muon Update Manager detected an update for the package "libkdecorations4abi2", but the boxes weren't checked. Like a dummy, I checked the boxes and applied the update. Now my Netrunner 14.2 system is useless. No window controls, cant type password into synaptic. Any ideas how to fix this without re-installing?

Same misery here.
After update I got an error saying libkdecorations4abi2 was conflicting somewhere. I went to the Konsole and did apt-get -f install after being advised so.
It didn't help. My windows are still missing their control buttons and can't move. However I am able to type in my root password and launch synaptic. It showed a bunch of broken packages which I removed. I reinstalled libkdecorations4abi2. I wish I knew what else is missing. I certainly don't feel like formatting and reinstalling the whole computer, especially considering this version's lts should end next spring or so.

(5th November 2015, 23:09)leszek Wrote: Then you have broken packages.
Please try

Code:

sudo apt-get install kde-window-manager[code] in a terminal to see an error message.

[/code]

Code:

Some packages could not be installed. This may mean that you have

requested an impossible situation or if you are using the unstable
distribution that some required packages have not yet been created
or been moved out of Incoming.
The following information may help to resolve the situation:

The following packages have unmet dependencies:
kde-window-manager : Depends: libkdecorations4abi1 (= 4:4.11.99-0ubuntu1.2~ppa5) but it is not going to be installed
Depends: kde-window-manager-common (= 4:4.11.99-0ubuntu1.2~ppa5) but it is not going to be installed
E: Unable to correct problems, you have held broken packages.

I can confirm after a new installation with 14.02 that if i update only language pack (fr), i get a functional system.
I had to erase the ".kde" from the home arising from the previous installation process.